Installation - Danfoss MCV104A Manual

INS TALLATION
A highly reliable connection between the swashplate and the
drag link is necessary for safe operation. An unreliable connec-
t o i n m y a e r u s t l n i o l s s o f f
Series 3X pumps meet this requirement, but all Series 2X units
not already equipped with an EDC or Hydraulic Displacement
and E-rings used to attach the original drag link. Series 20 and
26 models require a spacer plate between the control and the
pump housing.
Series 21, 22 and 27 pumps with MDCs require changing of the
pump Drag Link before mounting EDC.
Series 3X pumps with Serial Number of 82-34-00000 or greater
units have a clearance notch cast into the swashplate that
provides additional room for link movement. Series 3X pumps
Danfoss.
Prior to mounting any control on a pump, ensure that both the
control and the control feedback link are correct for the pump
as evidenced by the series number stamped on the link and
the part number labeled on the control body. See Table D and
Warning.
MOUNTING
Follow the procedure outlined below to attach the EDC to the
pump.
REMOVING THE OLD HARDWARE
1. Thoroughly clean all external surfaces of the pump and
control with steam or solvent. Blow dry.
2. Remove the existing control from the pump by removing
the nine hex head screws from the housing. Slip the pin on
the control linkage out of the end of the swashplate drag
link. See Swashplate Drag Link diagram.
3.
which the control was mounted.
4. Remove the E-ring from the inside end of the connecting
pin. Use caution not to drop the E-ring into the housing
during the removal. See Pin Connection diagram.
5. Remove the pin from the swashplate drag link and swash-
plate through the case drain port using a magnet or other
tool. Remove the drag link. On some models it may be
necessary to hold the swashplate off neutral to align it with
the case drain hole. See Swashplate Location diagram.
© Danfoss, 2013
e e d b a k c i w h t a e r u s t l n i g o l s s f o
K07116 • Rev AB • September 2013
TABLE D. TABLE D CORRELATES THE PUMP SERIES NUMBER WITH
THE SERIES NUMBER STAMPED ON THE SIDE OF THE CONTROL
o c n r t . l o
FEEDBACK LINK PROTRUDING FROM THE CONTROL.
SERIES
20,
21, 22
23
24
25
26
27
33, 34, 36
Exercise care when placing the valve on a surface before
mounting on a transmission. Dropping or otherwise force-
fully setting the valve with the linkage down may break the
crosslink, resulting in a lack of response to command.
SWASHP LATE D RAG LINK
Swashplate Drag Link/Control Feedback Link
Connection Between Original Control and Pump.
LINK MARKING
20 (1/4 spacer)
21, 22
23
24
25
26 (1 1/2 spacer)
27
33, 34, 36
WARNING
1124B
12